NDLI: Simulator investigation of biogas fertilizers of N on land carrying capacity

Content Provider	IEEE Xplore Digital Library
Author	Miaozhuang Zheng Lin Hu Daoming Wu Shanping Chen Anxiu You Jiewen Huang Jianyu Cui
Copyright Year	2011
Description	Author affiliation: Key Laboratory of Plant-Soil Interactions, MOE, College of Resources and Environmental Science, China Agricultural University, Beijing, 100193, China (Miaozhuang Zheng; Lin Hu; Daoming Wu; Shanping Chen; Anxiu You; Jiewen Huang; Jianyu Cui)
Abstract	A subsurface infiltration system experiment was conducted using a soil column to investigate the N carrying capacity of turfgrass soil with different biogas fertilizer applications. The concentrations of NO3-N and total nitrogen in the soil leachate increased with an increase in biogas fertilizer dosage. With biogas fertilizer application rates of 200 kg $N/hm^{2}$ (B-200) and 600 kg $N/hm^{2}$ (B-600), total nitrogen entrainment in leachate equaled 35.52 $kg/hm^{2}$ and 3.34 $kg/hm^{2},$ with no significant difference between the treatments. However, with applications rates of 1000 kg $N/hm^{2}$ (B-1000) and 1400 kg $N/hm^{2}$ (B-1400), total nitrogen entrainment values were 70.76 $kg/hm^{2}$ and 146.76 $kg/hm^{2},$ respectively, and significantly higher (P < 0.05) than in the B-200 and B-600 treatments. Thus, the nitrate-nitrogen environmental risk to groundwater increased with an increase in biogas fertilizer dosage. Biogas fertilizer application presented much less risk to groundwater than did application of a chemical fertilizer at the same fertilizer application rate. Based on China's quality standard for groundwater (GB/T 14848-93), NO3-N concentrations in leachate under the B-200 and B-600 treatments met the category III water quality standard, whereas the test results for 10% and 32.5% of leachate samples in the B-1000 and B-1400 treatments exceeded the category III limit, respectively. Thus, considering the limitation of 20 mg/L NO3-N in leachate as the evaluation criterion, the N carrying capacity for biogas fertilizer application was no less than 600 kg $N/hm^{2}$ for the turfgrass-soil subsurface infiltration system in 2009.
Starting Page	1996
Ending Page	2000
File Size	838717
Page Count	5
File Format	PDF
ISBN	9781612847498
e-ISBN	9781612847528
DOI	10.1109/ICMREE.2011.5930729
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Carrying capacity Turfgrass Absorption Subsurface Infiltration system Soil Nitrogen Indexes Biogas fertilizers Biomedical monitoring Monitoring N
Content Type	Text
Resource Type	Article

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